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v3.21.1

Leases - Narrative (Details) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) lease branch lease_renewal_option | Dec. 31, 2018 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2019 USD ($) branch
Lessee, Lease, Description [Line Items] |  |  |  |
Lessee, number of operating leases | lease | 58 |  |  |
Lessee, number of finance leases | branch | 1 |  |  |
Lessee, number of total operating leases, noncurrent | lease | 49 |  |  |
Lessee, number of total finance leases, noncurrent | branch | 1 |  |  |
Lessee, operating and finance lease, number of options to renew | lease_renewal_option | 1 |  |  |
Operating lease right-of-use assets | $ 49,537 |  |  | $ 32,539
Operating lease liabilities | 55,187 |  |  | 35,525
Finance leases | $ 1,588 |  |  | $ 0
Lease expense |  | $ 5,019 |  |
Amortization of favorable lease intangibles |  | $ 90 |  |
Franklin Financial Network, Inc. |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lessee, number of finance leases | branch | 1 |  |  | 0
Operating lease right-of-use assets | $ 23,972 |  |  |
Operating lease liabilities | 23,972 |  |  |
Finance leases | $ 1,630 |  |  |
Forecast | Corporate headquarters |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease right-of-use assets |  |  | $ 29,000 |
Operating lease liabilities |  |  | $ 30,000 |
Minimum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lessee, operating and finance lease, term of contract | 1 year |  |  |
Lessee, operating and finance lease, renewal term | 20 years |  |  |
Maximum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lessee, operating and finance lease, term of contract | 35 years |  |  |

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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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